Function GetFilesystemNameLength

be/src/util/hdfs-util.cc:152–164

Returns the length of the filesystem name in 'path' which is the length of the 'scheme://authority'. Returns 0 if the path is unqualified.

// Returns the length of the filesystem name in 'path' which is the length of the
// 'scheme://authority'. Returns 0 if the path is unqualified.
static int GetFilesystemNameLength(const char* path) {
  // Special case for "file:/". It will not have an authority following it.
  if (strncmp(path, "file:", 5) == 0) return 5;

  const char* after_scheme = strstr(path, "://");
  if (after_scheme == NULL) return 0;
  // Some paths may come only with a scheme. We add 3 to skip over "://".
  if (*(after_scheme + 3) == '\0') return strlen(path);

  const char* after_authority = strstr(after_scheme + 3, "/");
  if (after_authority == NULL) return strlen(path);
  return after_authority - path;
}

static bool FilesystemsMatch(const char* path_a, const char* path_b) {
  int fs_a_name_length = GetFilesystemNameLength(path_a);